Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
ISO 9241 usability aspects
| Usability aspects | Definition |
| Effectiveness | The goals or subgoals of the user to the accuracy and completeness with which their goals can be achieved |
| Efficiency | The level of effectiveness achieved to the expenditure of resources |
| Satisfaction | User attitude towards the use of the product, including both short-term and long-term measures (rate of absenteeism, health problem reports, or frequency of which users request transfer to another job) |
